Measurement of the B^0 -> D^*-a_1^+ Branching Fraction with Partially Reconstructed D^*

Details Measurement of the B^0 -> D^*-a_1^+ Branching Fraction with Partially Reconstructed D^* Measurement of the B^0 -> D^*-a_1^+ Branching Fraction with Partially Reconstructed D^*

2002-07-25

arxiv.org/abs/hep-ex/0207085v1

Physics

High Energy Physics

High Energy Physics - Experiment

16 pages, 2 figures, submitted to the ICHEP2002 conference

Scientific paper

The B^0 -> D^*-a_1^+ branching fraction has been measured with data collected by the BABAR experiment in 1999 and 2000 corresponding to a total integrated luminosity of 20.6 fb^-1. Signal events have been selected using a partial reconstruction technique, in which only the a_1^+ and the slow pion (pi_s) from the D^*- decay are identified. A signal yield of 18400 +/- 1200 events has been found, corresponding to a preliminary branching fraction of (1.20 +/- 0.07(stat) +/- 0.14 (syst))%.

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